User Guide

POLYGONcommand:Parametertoolbar
Width:
Line thickness with which the polygon is drawn. Select the largest possi
-
ble width. That avoids unnecessary quantities of data when the board is
sent for manufacture. If the wire width is lower than the resolution of
theoutputdriverintheCAMProcessor,awarningisissued.
Afinerlinewidthpermitsthepolygontohaveamorecomplex shape.
Pour:
Specifiesthefillingtype.Thewholearea(Solid)oragrid(Hatch).
Rank:
Overlapping polygons must not create any short-circuits. Rank can
therefore be used to determine which polygons are to be subtracted
from others. A polygon with rank = 1 has the highest priority in the
Layout Editor (no other polygon drawn in the layout is ever subtracted
from it), while one with rank = 6 has the lowest priority. As soon as
there is an overlap with a higher rank, the appropriate area is cut out
from the polygon with rank = 6. Polygons with the same rank are com
-
paredbytheDRC.
Polygons that are created in the Package Editor
can be assigned the rank
0 or 7. Rank = 0 has highest priority and will not be touched by other
polygons. Polygons with rank = 7 will be pushed away from all other
polygonsdrawninthelayout.
Spacing:
If the option Hatch is chosen for Pour, this value determines the spacing
ofthegridlines.
Isolate:
Defines the value that the polygon must maintain with respect to all
other elements not part of its signal. If higher values are defined for spe
-
cialelementsintheDesignRulesornetclasses,thehighervaluesapply.
Thermals:
Determines whether pads in the polygon are connected via thermal
symbols, or are completely connected to the copper plane. This also ap
-
plies to vias, assuming that the option has been activated in the Design
Rules.
The width of the thermal connectors is calculated as the half of the pad's
drill diameter. The width has to be in the limits of a minimum of the
wirewidthandamaximumoftwicethewirewidthofthepolygon.
Don't choose the polygon's width too fine, otherwise the thermal con
-
nectorswon'tresistthecurrentload.
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EAGLEManual